SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM 8-K
                                 CURRENT REPORT


     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934


       Date of Report (Date of earliest event reported) September 9, 2005
                                                        -----------------

                         Progenics Pharmaceuticals, Inc.
             (Exact name of registrant as specified in its charter)


          Delaware                     000-23143               13-3379479
----------------------------          -----------          -------------------
(State or other jurisdiction          (Commission            (IRS Employer
     of incorporation)                File Number)         Identification No.)


         777 Old Saw Mill River Road, Tarrytown, New York    10591
         ---------------------------------------------------------
           (Address of principal executive offices)     (Zip Code)


        Registrant's telephone number, including area code (914) 789-2800
                                                           --------------


         --------------------------------------------------------------
         (Former name or former address, if changed since last report.)





Section 7.01 - Regulation FD Disclosure

     On  September  9, 2005,  the Company  announced  positive  phase 1 clinical
findings  regarding  its  investigational  drug,  PRO  140,  a novel  HIV  entry
inhibitor.  PRO 140 is a  humanized  monoclonal  antibody  against  CCR5 that is
designed to protect  healthy  immune  system  cells from  infection by the human
immunodeficiency  virus  (HIV),  the  causative  agent of  AIDS.  Dose-dependent
binding of PRO 140 to CCR5-expressing  cells was reported in the clinical trial,
with the highest PRO 140 concentration tested  significantly  coating CCR5 cells
for at least 60 days. The CCR5  co-receptor is a key portal of entry used by HIV
to infect immune  system  cells;  therefore,  blocking  this  molecular  doorway
represents  an  important  therapeutic  target.  A copy of the press  release is
attached  hereto  as  Exhibit  99.1 and the  information  contained  therein  is
incorporated  by reference  into this Item 7.01 of this  Current  Report on Form
8-K.

The  information  furnished  pursuant to Item 7.01 in this Form 8-K shall not be
deemed to be "filed" for the purposes of Section 18 of the  Securities  Exchange
Act of 1934 or otherwise  subject to the liabilities of that Section,  unless we
specifically  incorporate  it  by  reference  in  a  document  filed  under  the
Securities Act of 1933 or the  Securities  Exchange Act of 1934. We undertake no
duty or  obligation  to  publicly  update or revise  the  information  furnished
pursuant to Item 7.01 in this Form 8-K.

Section 9.01 - Financial Statements and Exhibits

(c)      Exhibits

Exhibit Number    Description

99.1              Press release dated September 9, 2005



                                   SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.

                               PROGENICS PHARMACEUTICALS, INC.


                               By: /s/ MARK R. BAKER
                                   ---------------------------------------------
                                       Mark R. Baker
                                       Senior Vice President & General Counsel

Date: September 9, 2005